Sometimes the cannon is fixed in position, and other times you have to use the force of firing it to push it into a spot where you can hit the ball.
有时大炮是固定的位置，其他时候你必须使用发射它的力量把它推到一个你可以击中球的点。
This report described an Apache helicopter firing warning shots after coming under fire. Its reaction was described as “an escalation of force.”
该报告中描述了一架阿帕奇直升机在遭遇攻击后发射警示弹，而它的反应被形容为“火力升级”。
Both NASA and the Air Force Office of Scientific Research have shown enough interest in the concept to fund initial rocket firing tests.
美国国家宇航局和美国空军科学研究办公室都对资助起初的火箭点火测试表现浓厚的兴趣。
The paper focuses on whether muzzle kinetic energy could be a token and appraise essence factor of gun bear force and move in firing or not.
对炮口动能能否作为火炮后坐运动的表征量和火炮受力评价的本质因素进行了研究。
The paper focuses on whether muzzle kinetic energy could be a token and appraise essence factor of gun bear force and move in firing or not.
对炮口动能能否作为火炮后坐运动的表征量和火炮受力评价的本质因素进行了研究。
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